Metamizole EP Impurity B

Impurities

NP2985

83-07-8

Metamizole EP Impurity B

Metamizole EP Impurity B is an impurity of Metamizole, which is a painkiller, spasm reliever, and fever reliever.

4-Amino-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one; 4-Aminophenazone; 4-Amino-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one; 4-Aminoantipyrine; (2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amine; 1,2-Dihydro-1,5-dimethyl-2-phenyl-4-amino-3H-pyrazol-3-one; Minoazophene; Metapirazone; 3H-Pyrazol-3-one, 4-amino-1,2-dihydro-1,5-dimethyl-2-phenyl-; (2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amine; 1-Phenyl-2,3-dimethyl-4-amino-5-pyrazolone; 4-AAP; 4-Amino-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one; 4-Amino-1,5-dimethyl-2-phenyl-3-pyrazolone; 4-Amino-2,3-dimethyl-1-phenyl-5-pyrazolone; Aminoantipyrine; Aminoazophene; Ampyrone; NSC 60242; Solvapyrin A

4-amino-1,5-dimethyl-2-phenylpyrazol-3-one

203.24

C11H13N3O

CC1=C(C(=O)N(N1C)C2=CC=CC=C2)N

InChI=1S/C11H13N3O/c1-8-10(12)11(15)14(13(8)2)9-6-4-3-5-7-9/h3-7H,12H2,1-2H3

RLFWWDJHLFCNIJ-UHFFFAOYSA-N

309.0±45.0°C at 760 mmHg

108-109°C

≥95%

1.207±0.06 g/cm3

Soluble in Chloroform (Sparingly), Methanol (Slightly)

Pale Yellow to Brown Solid

Store at 2-8°C under inert atmosphere

Yellow

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